Pump.



v PATENTED M Y 26, 1808. J. W. BAGBY.

PUMP. APPLICATION FILED 118.9, 1908.

VII/I/I/III/ 8 I WITNESSES.-

INVENTOR.

A TTORNL Y5 BAGBY, a citizen of the United States, residmore efficient in operation.

' rocate alternately so as to produce a double .cost of the pumps, while their relative ar' 'will appear as the nature of the invention is ton with the valve thereof open to show the that certain features of the invention are PATENT oruuon.

PUMP.

Spe cification of Letters Patent. Patented m 2c, 1908.

No. 888,574. hp'plication filed August 9, 1906. Serial No. 329,924.

To all whom it may concern:

Be it known that 1, JAMES WILLIAM with a pump of the single acting type. Referring to the drawing, 1 designates the um casing which may be of any desired engt or diameter and at the upper end thereof is provided a discharge spout 2. Arranged for reciprocation in the casing 1 are upper and lower pistons3 and 4, respectively.

ing at. Wichita,-in the county of Sedgwick' and State of Kansas, have invented anew' and useful Pump, of which the following is a specification. I

This invention relates to a lift pump and has for itsgeneralobject to improve andv simplify the. construction and operation of pum s of this characterso 'as to render them 0 ening for the reception of t e plunger rod 5. This rodextends through central openings 6 and 7, respectively, in the top piston and top 8 of the casing. The upper piston 3 is provided with two rods 9 rigidly connected at their lower ends thereto Furthermore, the object of the resent invention is to provide a pum emqiodying. a pair of cooperatively arran e pistons havlng a novel arrangement an constructionof valves, the construction and mountings for the valves simplifying and cheapening the The upper en s of the several piston rods are each united'to an independent connecting rod or pitman 10, which pitmen are connected with a two-throw crank 11. crank 11 is constructed with a central arm 12 to which the pitman on the middle (piston rod is connected, and two correspon ingly extending arms 13 to which the pitmen of the piston rods 9 are connected. By this arrangement, one piston is reciprocated in one direction, while the other piston is simultaneously reciprocated in the opposite direcrangement insures the assage of water therethrough without un ueloss in friction. Another object of the invention is to provide a double piston pump. so arranged that the water will pass successively through the pistons in substantially the same spiral di* rection, the pistons being arranged to recipacting pump. a

With these objects in view, and others, as

flow of water, as the crank shaft is rotated. The crank shaft'is mounted on the upper end of standards 14 and crank handle 15 securedto one end thereof. It is obvious that the arrangement of the pistonrods maybe reversed should it be found desirable.

The pistons are each preferably made of sheet metal of suitable thickness and of such material as to withstand the chemical effect of the liquid the pump is designed to operate with. The piston comprises a dish-shaped body 16 having its edge turned down into a cylindrical flange 17 so as to add stiffness to the piston. The body is provided with a plurality of sector-shaped pprts 125 punched out of the same, leaving spo es 19 connecting the rim 20 with the central portion 21. The punching of the ports is SQ- performed as to leave ribs '21 along one edge of the spokes, which ribs are turned downwardly at an angle to the plane of the piston the ribs of v the u per piston extending at an incline to In'the present instance, I have elected to the p ane thereof, while those of the lower illustrate the invention as a double acting piston extend either parallel to the axis of ump, but it is to be understood, however,

better understood, the invention comprises the various novel features of construction and arrangement of parts, which will be more fully described hereinafter, and set forth with particularity in the claims appended hereto. I

- In the accompanying drawing, which illustrates-one of the embodiments of the invention, Figure 1 is acentral vertical section of a double-acting pump, the lower end and intermediate portion of the casing being broken away. Fig. 2 is a perspective view of one of the pistons showing several of the valves removed, and the'remaining valves closed. Fig; 3is a side elevation of a piston showing the valves open. Fig. 4 is a diagrammatic view of one of the ports of a pispassage of the Water therethrough. Corresponding parts inthe several figures are indicated throughout by similar charuc ters of reference. I

the piston, or

The lower piston 4 is provided with a central the lower end of at points on o posing sides of theppenmg 6.

tion, so that the pump will deliver a constant is rotated by moans-of a capable of being carried out in connection The they may, in order to simplify the upper piston, as enables both pistons to be punched and formed as duplicates;

Over each port 18 is mounted 'a sector-shaped valve 22 arranged to 0 en upwardly. These valves are each hinge along one of its radial edges sothat it will open to an inclined-position' more or less approximating the incline .of the vanes 21, so that the'passag'e formed I between each valve" and the adjacentrib or vane 21 will slightly contract in an upward direction and be disposed with its axis in' clinedfto the horizontal. By this arrange ment, the water will .pass through the pistons, "as they move downwardly, in 1 separate streams, which, by reason of the inclinationing aloope wire 23 pas'singthrough the registerin openings 24' of each valve and spokel' These oops are so proportionedas topermit the valves to swing upwardly to theinclined' or partially-opened position shownin Figs.

3 an 4. Y

Ina pump provided with pistons of the i character described, the downward movemerit of thelower 'piston causes -th e":water to pass'through the several ports beneath the nclined valves in a screw-like, course, the.

valves opening no'rma-llyfto positions similar to" those shown in;;,Fig. 3; -As' the piston 4 moves downwardly, water is transferred from the lowerside thereof through the several ports to the space above rthe piston. and, in so doing, acquires arotaryi inovem ent,','so

, "that by the time the pistonreaches the lower limit ofits' stroke, .the;body of water above the same is in more or less motion, so that as the lower piston 4, moves upwardly and the; upper piston3 moves downwardly, thero-v tary movement of the water during the relative-proximating movements of the pistons causes a relative spiral movement between the w'ater'and the upper piston, the pitch of the spiral correspond ng substantially to the angle of inclinationof the valves and ribs of theupper piston. Thus the resistance of the water passing through the upper piston due to the combined action of the said piston moving downwardly, and the lower piston moving 'the water upwardly will be substantially reduced. v

The diagram shown in Fig. 4 illustrates the manner in which each valve and adjacent vane 21 causes the water passing through the port to acquire an upwardly inclined direction; The water thus discharged through the port strikes upon the 'wall of the casing 1 and is deflected andJgiven a spiral move: ment. i This invention is of particular utility when applied to pumps having'reciprocatory pis- I as du lica'tes', and the tons provided Withvalves' pivoted to swing onradial axes as the inclinationof the valves due to the partial opening produces a relative rotary or spiral movement of the water in passing therethrough, and byernployinga pair of cooperating pistons both. employing valves turning on radial axes, the rotary motion of the waterwill serve to direct itthrough the upper piston in a direction parallel to the planesof thevalves of the up er piston when open, and the inclinationof t e ribs serves to present. the metal" edgewise ,-to-- thegflowing water to-reduperesistance, and also to stiffen the spokes on which I the .'.valves are pivoted. In .the particular embodiment shown, the

ribs of both pistons are 'iI lOli118d', T aslthisenablesthe piston's'to be iinchedandiformed 'ction ou the water woul probably be slightly reduced were the ribs on the lower piston turnedmore-n'early at right angles to the planeof the piston; but the inclinationof'the valves'ofth'evlower I piston induces rotary movement of the .wa-

ter, and by associating with the lo'wer'piston,

an upper iston' constructed as-described, a- ;greater 'e ciency is obtained in a pump of 1 this'type.

Moreover, the continuous flow of the-water after passing'through the upper piston provides a source of water supply t isparticularly adapted to hydraulic mining of the water increases the efficiency of the water asa dislodging and washing medium.

' A pump constructed in accordance with the present invention may be manufactured and sold at a low cost, and it is relatively light in Weight, as its parts may be manufactured almost wholly by means of dies, the pistons "and analogous uses wherein the uniform flow being .each composed of a single :EBOG of sheet metal wherein the valve openings ,are ormed by. punching out segmental'sectioiis, the radial spokes formed between the valve 0 enings providing supports for the. valve pivots, and these supports and the peripheral rim ofthe piston are stifiened or reinforced by the angularly arranged 'ribs which are arranged edgewise to the flat sides of the spokes, and "as the water in passing, through t 'e artly opened valves of the lower piston will e given a spiral movement, the inclined ribs of the upper piston will offer a minimum resistance to the water in passing therethrough, as these ribs are presented edgew 'se to the water.

What is claimed 1s: 1.: In a pump the combination with a casing; of a piston adapted to operate therein and composed of astamping of sheet material having a circumferential flan e adapted to cooperate with the inner walls of the casing and provided with ajseries of sector shaped ports, radially extending s okes being formed between the ports, an the material at one side of each port being deflected angularly to the plane of the piston, and

sector-shaped separate fiat valves connected to the piston and dis osed to cover the respective ports,

said va vesbein disposed to swing-open on terial having a circumferential flan e adapted to 006 erate with the inner wa ls of the casing an provided with a series of sectorshaped ports, radially extending s okes be ing formed between the ports, an terial atone side of each port being deflected angularly to the plane of the piston, fiat valves adapted to cover the and a looped member passin throug perforations in one edge of each va ve and in the respective sgpkes of the piston for 1pivotallymounting t substantia y radial axes. I

3. In a pump the combination with a casadapted to' operate therein respective orts,

mg; of a piston and composed of a stamping of sheet 'ma i I terial having separate fiat valves I and disposed to. cover the respective ports,

the mae valves oned to cooperate with the inner wa ls of the casing and-provided with a series of sector shaped ports, radially extending spokes being formed between the ports, and the ma terial at one side of each port being deflected angularly to the plane of the piston, and connected to the piston said-valves being disposed to swing open on substantially radial axes, a valved piston below the first mentioned piston and within the casing, an operating shaft having diametrically opposed cranks, and operative connections between the cranks and the respective pistons.

. In testimony that I claim the foregoing as I my own, I have hereto affixed my signature in the presence of two witnesses. JAMES WILLIAM BAGBY.

1Witnesses':

O; MARTINSON, 'F. J SULLIVAN.

a circumferential flange adapt- 

